0_0_13921498_6064.cpp: In function 'int main()': 0_0_13921498_6064.cpp:14:7: error: 'i' was not declared in this scope for( i=2;i*i<=n;i++) ^ 0_0_13921498_6064.cpp:19:8: error: 'j' was not declared in this scope for( j=0;j<=n;j++) ^